[Dovecot] IMAP Label Updates not showing up across shared account

[Ricardo Branco]

Dovecot 2.0.13
Centos 5.4 x86_64 2.6.18-164.9.1.el5 (on ESXi)
OS/Logs on local storage, /home all on NFS server for datastore (NFS Store Centos 5.5 x86_64 2.6.18-194.11.1.el5)
Thunderbird 3.1.10 on XP/W7 Desktops

We are seeing a werid issue where there is a delay of up to a few mins in seeing label updates on messages.
I have confirmed that Thunderbird is sending the update to the server with WireShark, its just additional users 
connected to the same mailbox do not see them.
Marking a message as Seen/Un-Seen happens faster just not labels.
If you have a label set when you mark a message as Seen/Un-Seen the other clients then see the update straight away.


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